Christian graduated from Ensley High School in 1977 and studied public administration and criminal justice at Jefferson State Community College. He later graduated from the University of Alabama Law Enforcement Academy.
joined the Sheriff's department in January 1982. As a deputy he was assigned at different times to the Jefferson County Jail, to patrol, to the Court Services Division and to the Narcotics Division. He took charge of coordinating the Birmingham Area Crimestoppers program and rose into administrative duties, serving as the department's public information officer since 2002.
- Robinson, Carol (December 10, 2009) "Randy Christian named Jefferson County Sheriff's Department chief deputy."
- Robinson, Carol (January 10, 2019) "Randy Christian’s best one-liners: Retiring lawman known for jokes gets one last naked suspect." The Birmingham News